function
Wraps a function to be executed in the fakeAsync zone:
flushMicrotasks()
,tick()
simulates the asynchronous passage of time.fakeAsync(fn: Function): (...args: any[]) => any
fn | Function |
(...args: any[]) => any
: The function wrapped to be executed in the fakeAsync zone
If there are any pending timers at the end of the function, an exception will be thrown.
Can be used to wrap inject() calls.
describe('this test', () => { it('looks async but is synchronous', <any>fakeAsync((): void => { let flag = false; setTimeout(() => { flag = true; }, 100); expect(flag).toBe(false); tick(50); expect(flag).toBe(false); tick(50); expect(flag).toBe(true); })); });
© 2010–2020 Google, Inc.
Licensed under the Creative Commons Attribution License 4.0.
https://v10.angular.io/api/core/testing/fakeAsync